{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7104-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7104-7","canonicalUrl":"https://aoctrl.com/siemens/5SY7104-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7104-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7104-7, miniature circuit breaker, 1-pole, C-curve, 4 A rated at 35 °C, 15 kA (EN 60898) / 40 kA (IEC 60947-2), 1 MW width.","salesMarkdown":"It's the standard go-to for protecting branch circuits in industrial control panels, distribution boards, and machinery where the inrush from small motors or transformers would nuisance-trip a B-curve. Breaking capacity is 15 kA per EN 60898-1 and 40 kA per IEC 60947-2 / UL 1077 — that dual rating means it's accepted in both residential-style distribution boards (EN 60898) and industrial panels where higher fault currents are expected (IEC 60947-2). ## Fit and mounting — DIN rail, one module wide Depth is 76 mm (70 mm installation depth), height 90 mm. Snap-on quick assembly system, any mounting position. That means it drops into any existing SENTRON or third-party distribution board without re-drilling or special adapters. IP20 with connected conductors — fine inside a closed panel. ## Temperature derating — don't ignore it The 4 A rating holds at 35 °C ambient. At 40 °C it derates to 3.76 A, at 50 °C to 3.5 A, at 60 °C to 3.22 A. Maximum ambient is 75 °C, minimum -40 °C.","metaTitle":"Siemens 5SY7104-7 SENTRON MCB, C-Curve 4A, 1P, 15/40 kA","metaDescription":"Siemens 5SY7104-7 SENTRON miniature circuit breaker, C-curve 4 A, 1-pole, 15 kA per EN 60898 / 40 kA per IEC 60947-2. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SY7104-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","description":"Miniature circuit breaker 230/400 V 15kA, 1-pole, C, 4A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"4 A","at DC rated value":"60 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","at 35 °C rated value":"4 A","at 40 °C rated value":"3.76 A","at 45 °C rated value":"3.63 A","at 50 °C rated value":"3.5 A","at 55 °C rated value":"3.36 A","at 60 °C rated value":"3.22 A","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"1","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to EN 60898 rated value":"15 kA","according to IEC 60947-2 rated value":"40 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC","at DC according to IEC 60947-2 rated value":"15 kA","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","supply voltage with single-phase operation at AC rated value":"230 V","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$13.97","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ccb592f78c9a0352257fafd8df5ad21d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=204772&mlfb=5SY7104-7"},"ai":{"faq":[{"question":"What is the width and depth of 5SY7104-7?","answer":"Width is 18 mm (one modular unit), depth is 76 mm, installation depth 70 mm, height 90 mm."},{"question":"What compliance documentation does the 5SY7104-7 carry?","answer":"It complies with IEC / EN 60898-1 and IEC / EN 60947-2 / UL 1077. Halogen-free and silicon-free construction. Pollution degree 3, overvoltage category III."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7104-7","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/5SY7104-7 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}